add support for <select> as a form input

[lovasoa]

SELECT 'form' as component;
SELECT 
    'Friend' as name, 
    'select' as type, 
    group_concat(family_name, '\n') AS options
    group_concat(id, '\n') AS option_values
FROM people;

see #3

[lovasoa]

@leoedin : this is implemented in v0.6.11, using a slightly different format:

SELECT 
    'select' as type,
    json_group_array(json_object("label", name, "value", id)) as options
FROM fruits